Journal
SCIENCE
Volume 336, Issue 6082, Pages 736-739Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1217277
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Funding
- NIH [R01HD056369, R01CA160356, R01CA1555004, R01-LM009012, R01-LM010098, 1P50CA150964, UO1 CA152756, 5T32GM008056-29]
- Med into Grad initiative of the Howard Hughes Medical Institute
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Cancer is characterized by gene expression aberrations. Studies have largely focused on coding sequences and promoters, even though distal regulatory elements play a central role in controlling transcription patterns. We used the histone mark H3K4me1 to analyze gain and loss of enhancer activity genome-wide in primary colon cancer lines relative to normal colon crypts. We identified thousands of variant enhancer loci (VELs) that comprise a signature that is robustly predictive of the in vivo colon cancer transcriptome. Furthermore, VELs are enriched in haplotype blocks containing colon cancer genetic risk variants, implicating these genomic regions in colon cancer pathogenesis. We propose that reproducible changes in the epigenome at enhancer elements drive a specific transcriptional program to promote colon carcinogenesis.
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